How many kinds of tourmaline are divided? The color of tourmaline is quite rich, and it can be divided into many kinds. Today, Xiaobian will give you a simple explanation. According to the color, it can be divided into several types, each of which has related introductions. Tourmaline is the most colorful gemstone, which is very popular among consumers. Let's take a look at it.
For gems, tourmaline is the name of the group, but in the classification of GIA (Gemological Institute of American), tourmaline can be divided into fourteen.
Red tourmaline (Rubellite)
Red is the highest value among the tourmalines, among which the best is purple and rose red, but the natural ones produce more brown, maroon, and deep red, and the color tone changes a lot.
Green tourmaline (Verdelite)
Includes light green to dark green, yellow green or brownish green. Some colors may be dark or deep, and only visible through light. Dark green is almost opaque in the direction of the optical axis due to its strong dichroism, but can be improved by heat treatment. The best is emerald green, which was mistaken for emeralds in Europe and Brazil, showing its level of luxury. Currently only produced in Brazil and Madagascar.
Azure tourmaline (Indicolite)
Pure blue is rare, common deep purple blue or green blue. Color saturation is more precious, sometimes called "blue tourmaline." Occasionally light blue to light green blue.
Black tourmaline (Schorl)
Mineralogists call it black tourmaline. Occasionally used to replace coal or black chalcedony on cheap jewelry.
Purple tourmaline (Siberite)
Colorless tourmaline (Achroite)
Sometimes called white tourmaline (achroite, Greek "white" meaning). It's almost useless on gems unless it has a cat's eye effect.
Bi-Colored
Watermelon Tourmaline (Watermelon)
There are two or more colors on a crystal, or different from top to bottom, or different from inside to outside. If the middle is red, the outside is green, also called "multicolor tourmaline." Multicolor tourmalines are sometimes used as gemstones, but are more suitable for viewing or collecting crystal specimens without cutting.
Cat'seye Cat'seye
Some green tourmalines have a lot of slits or needle-like inclusions, cut into a curved surface, and the cat's eye effect can be seen. Other colors have less cat's eye effect.
Sodium Magnesium Tourmaline (Dravite)
Mineralogists sometimes call the magnesium tourmaline a brown tourmaline, which is difficult to see in pure yellow or orange. Different shades of yellow or brown are popular, like sherry topaz and golden beryl. Green brown to brown green, orange brown to brown orange and green yellow also have certain sales. The color is very deep, and the poor gloss is almost no sales.
Alexander Color-change
Rare, occasionally reported. Yellow-green to brownish green in the sun, orange-red under the light.
Calcium Lithium Bismuth (Liddicoatite)
Chrome-containing tourmaline (Chrome)
Paraiba
The history of tourmaline used to make gems is short, but because of its beauty of rich colors and high transparency, it has won people's love when it came out, and it is called a gem of all kinds. In the palaces of the Qing Dynasty in China, there were more tourmalines. Now, the tourmaline is a favorite mid-range gemstone variety, known as the October birthstone.
The above introduces you to different kinds of tourmalines. What kind of tourmaline do you know about? In this small series, I have listed more than a dozen kinds of tourmalines. I don't know if there are other kinds of tourmalines. If there is any, please tell Xiaobian. This will help you learn and exchange. I hope this information can be used for you. The role of the reference.
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